SEO Keywords

The SEO Keywords MCP + API your AI agent can call directly. Search volume, CPC, competition, and ideas.

AI search visibility is half the picture; you still need the SEO Keywords people actually type into Google. /v1/keywords returns monthly search volume, CPC, competition, and related keyword ideas for any seed, clean flat JSON, not the nested XML-ish payloads the wholesale providers hand you. Same API key, same credit balance as your AI-search calls.

$1 free on signup
Credits never expire
No subscription
MCP native

Get $1 free, try it Install MCP

POST /v1/keywordslive

1. You ask your AI, in plain English
How much search volume does ai blog tool get?

2. Cite42 pulls the keyword data
→ volume · CPC · competition · ideas

3. You get back, in plain English
4,400/mo, $3.12 CPC — plus 12 related ideas.

WHAT YOU CAN ASK

Ask in plain language. Get structured JSON.

Each is one call against the endpoint, ask in plain English through the MCP, or hit the API directly. Same key, same credit balance.

You ask“How much volume does this keyword get?”

You get{ "keyword": "ai blog tool", "volume": 4400 }

You ask“What’s the CPC and competition on it?”

You get{ "cpc": 3.12, "competition": 0.41 }

You ask“Give me related keyword ideas to target.”

You get{ "ideas": ["ai blog generator", "best ai blog writer"] }

Why an SEO keyword API

Search volume your agent can pull mid-task, not a seat your team logs into.

Every SEO suite locks the same DataForSEO-class data behind a monthly seat and a dashboard a human has to open. /v1/keywords hands that data to your code instead: one POST with a seed returns monthly search volume, CPC, competition, and related keyword ideas as flat JSON, no async task IDs to poll, no nested wholesale payloads to reshape.

It is billed per lookup from the same prepaid balance as your AI-search calls, so an agent can enrich a brief, size a content quarter, or validate a programmatic-SEO template without a second vendor, a second key, or a per-seat plan that bills whether you run one lookup or a thousand.

Volume, CPC, competition, and ideas for any seed in one flat response.
Same API key and credit balance as your AI-search endpoints.
Callable over MCP, so the agent fetches its own keyword data.

PRICED FOR REAL WORK

Real scenarios. Real numbers.

Real workflows, real call counts, real totals, see what this looks like before you commit. Credits never expire.

content planner
Size a quarter of content
Pull volume, CPC, and competition for 100 candidate keywords to decide which 12 posts to write this quarter. 100 calls · $20.00 total.
agent builder
Wire keyword data into your SEO agent
Let your agent enrich every brief it drafts with live volume and competition, no second vendor to integrate. 250 calls · $50.00 across the month.
programmatic SEO
Validate a page-template at scale
Run 500 seed terms through /v1/keywords to keep only the ones with real demand before generating templated pages. 500 calls · $100.00 total.

vs. a monthly SEO suite seat

Pay per lookup, or pay for a dashboard nobody on your agent stack logs into.

Ahrefs, Semrush, and the rest gate the same class of keyword data behind a per-seat subscription built for a human in a browser. /v1/keywords serves it to your code, by the call. Same demand data, very different access.

	Cite42	SEO suite subscription
Integration	One POST, one key, flat JSON your agent reads	A dashboard, or a separate API plan and second key
Agent access	MCP-native; the agent pulls volume + CPC itself	Built for a human logging into a browser UI
Data returned	Volume, CPC, competition + ideas in one flat shape	Polished UI; raw export often a higher tier
Billing	$0.20 per lookup from your prepaid balance	Monthly per-seat plan whether you run 1 or 1,000
Bundling	Same key + balance as your AI-search calls	Classic SEO only; AI-search visibility is a separate tool
Cost, 100 keywords	$20.00, pay only for the lookups you run	A full month of seats whether you use them or not

PRICING

Pay per call. $25 minimum deposit. Credits never expire.

This page's endpoints below. See /pricing for the full per-endpoint table.

Endpoint	Price	What you get
POST/v1/keywords	$0.20	Search volume, CPC, competition + related keyword ideas for a seed

See all endpoints and the model coverage table →

KEEP EXPLORING

Related endpoints

Same API key, same credit balance, different question.

Google TrendsGoogle TrendsInterest over time and rising queries.Explore google trends AI search visibilityAI brand rankingsMention rate, position, and share of voice.Explore ai brand rankings MCP serverAgent + MCPTalk to your agent normally. Zero integration code.Explore agent + mcp

QUESTIONS

Questions about seo keywords.

Cite42 wraps an established SEO data provider for classic keyword metrics. Search volume is a blend of ad-network ranges and clickstream panel data, the same provenance behind every major keyword tool. We normalize it into flat JSON and bill it through the same per-call balance as your AI-search endpoints. We are transparent that this is estimated demand data, not direct Google numbers (those don't exist as a clean API).

Same class of underlying data, very different developer experience. The wholesale providers return deeply nested, async-by-default payloads you have to poll for and reshape. Cite42 gives you one flat synchronous response, one API key shared with your AI-search calls, one credit balance, and one MCP surface. You pay a markup for the convenience and the bundling, skip it if raw wholesale integration is your thing.

Yes, it's live today alongside /v1/trends, the first classic-SEO endpoints we've added so builders don't have to wire up a second vendor. The AI-search endpoints (/v1/rankings, /v1/compare, /v1/search, /v1/citations, /v1/sentiment) are live too, all on the same key and balance.

Yes. Pass ideas:true and the response includes a list of related keywords with their own volume figures, enough to plan a content cluster from a single seed.

$0.20 per keyword lookup, billed from the same prepaid balance. No seat, no monthly minimum, you pay for the lookups you actually run.

READY WHEN YOU ARE

Get keyword data from the same API as your AI-search calls.

$1 free on signup. One key, one balance, every data type.